Stopper for hot-water bottles



A. B. SHAW STOPPER FOR HOT WATER BOTTLES.

APPLICAHON FILED JAN.20,1922.

mgmwfi Y Patentedh1y18,1922.

n. straw, or iunnronio, riassaonnsnrrs, nests-non re straw srncriirrr co.

INC., 63? MEDEGRD, SETTS.

STOIPFEIE. FOR HOTJVATEB BOITLES. I

incense.

Specification of Letters latent.

Patent-ed July 155, 1922.,

To all whom it may concern Be it known that I, A]: B. SHAW, a citizen of the United States of America, and a resi- 1 dent of Medford, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in- Stoppers for Hot-Water Bottles, of which the following is a specification.

This invention relates to stoppers for hot water bottles and has for its primary object the construction of a device of this character in which provision is made for preventing leakage between the inner endof the stopper and the usual packing ring supported thereon. Another objectof the invention is the simplification of the construction of the stopper and the means thereon for supporting the usual packing ring.

The invention consists primarily in a threaded stopper having a packing ring at its inner end freely revoluble relatively to said stopper and a thin flexible washer in-' terposed between said packing ring and the end of said stopper.

The invention further consists of a novel means for supporting the packing ring upon the stopper.

The invention further consists in a novel ited to the precise arrangement and organization of the instruinentalities as herein shown and described, except as required by the scope ofthe appended claims.

Of the drawings:

Figure 1 represents a front elevation of a stopper embodying the principles of the present invention, said stopper being illus trated as applied to a .portion of a hot was ter bottle which is shown in section.

Figure 2 represents a side elevation of the same. H

V Figure 3 represents a vertical section of the same, on line 3, 3 on Figure 2 and showing the bottom plate removed. V

F gure 4 represents a plan of said stopper.

Figure 5 represents an inverted plan'of same, and i c Figure '6 represents an enlarged vertical section of the lower end of said stopper.

Similar characters indicate like parts throughout the several figures of the drawings.

In the drawings 10 is a portion of the upper end of a hot water bottle having em.- bedded 'therein a threaded socket 11 provided at the bottom with the inwardly extending flange 12. A threaded stopper 13 is adapted to be screwed into the socket 11 by means of the handle 14. In the construction herein shown, the threaded body portion of the stopper andthe handle portion 14. thereof are formed integral and hollow. This handle portion 14 is preferably made as shown, in the drawings with oppositely disposed concave portions 15, which ai ord a. good grip for the hand when screwing the stopper into the socket 11 Or removing therefrom.

The lower end of the portion 13 of the stopper has an inwardly extending flange 16 against the under surfaceof which a disk 17 is adapted to bear. The lower end of the stopper 13 is provided with a peripheral bead 18 over which the edge 20 of the disk 17 is crimped, preferably, so that said disk 17 cannot rotate relatively to the stopper 13. The disk 17 has struck therefrom a reduced cylindrical portion 21 from the end of which extends another reduced cylindrical portion ,22 formed integral with the disk 17. Surrounding the reduced portion 21. and freely revoluble about the axis thereof is a packing member 23. i

interposed between this packing member 23 and the disk 17 is a thin flexible metal washer 24. When the metal washer 2 1- and packing member 23 have been positioned upon the cylindrical. portion 21 and metal washer 25 is placed upon the reduced cylindrical portion 22, the end. of said cylindrical portion 22 is then upset as indicated at 26 to retain said washer 25 in position further rotation of the packing member 23 and prevent the accidental displacement of said packingmember 23 and metal washer 2a.

The diameter of the washer 25, however, is such that if desired, the packing member 23 maybe sprung over said-washer 25 and a new packing member substituted there for. The washer 24; is very thin and flexible and asa consequence, the packing member 28 will Force the washer 24.- into contact with the under face of the disk 17 and cause it to conform to any irregularities in the face thereof. This will effectually prevent any liquid in the bottle from leaking by the inner wall of the packing member 23 and outwardly between the threaded portion 13 of the stopper and its enclosingsocket 11. The washer is positioned on the reduced end 22 sufficiently far from the disk 17 as to permit the free rotation of the packing member 23 about the cylindrical reduced portion 21. By meansof this construction of the disk 17, a simple means is provided for retaining the washer 2 1 and packing member 23 upon the stopper without the necessity of using rivets or other securing members.

"When the stopper is being inserted into the socket 11, the packing member 23 will rotate therewith until its under face comes into contact with the flange 12 upon the socket 11, and then the frictional contact between the two will be sufiicient to prevent 7 while the stopper is being further rotated to compress the packing member 23 against the flange 12. V

Heretofore in stoppers of this character, the packing member 23 is usually rotated with the stopper and soon becomes worn and useless if it is rotated while in contact with the flange 12. Then the packing member 23 has been compressed against the flange 12 by the continued rotation of the stopper, all leakage between said flange and the packing member is efiectually prevented.

The thin metal washer interposed between the packing member and the disk 17 will rotate with the packing member thereby causing the upper face of said metal washer 21 torotate in contact with the disk 17. By this construction the rubbing oi the upper surface of the packing member 23 against a metal surface is prevented and consequently there will he no wear upon said packing member as would be the case if said packing member rotated in contact with a fixed metal surface. I

If desired, two packing members 23 may be used upon the reduced end 21, one of which bears against the under face of the 1 disk 17 and the other bears against the washer 22. In such a construction two thin metal washers 24 would be interposed between the -packing members 23 sothat when the lower packing member 23 rotated about the cylindrical portion 21, one of the metal. washers 24- would. rotate therewith. in contact with the other washer 2% which would remain stationary in contact with the upper packing mei'nber.

1n the stoppers now in general use, the packing member is secured firmly to the stopper and when. the stopper is rotated and the packing member is in contact with its seat on the flange 12, the rubbing contact is liable to injure and soon destroy the packing member. As there is no ready means of renewing this packing member, the entire stopper isuseless and an entirely new stopper must besubstituted. 1n the present construction, should the packing member become sui'iiciently damaged to make it useless, the damaged packing member may be quickly removed and a new one substituted therefor.

.This simple construction of stopper is more eiiectual in use :as it makes hot water bottles absolutelynon-leakable at itsfilling point and the life of the stopper .itself is greatly prolonged. liioreovor it provides a means whereby a new packing membermay be placed quickly upon the stopper, thus making it unnecessary to throw away all of the stopper. The entire device is of very simple construction and the cost of the manutacture of same is reduced to a minimum.

it is believed that the operation and many advantages of the invention will be. readily understood without further description.

Having thus described my invention, I claim: I

1. A threaded bottle stopper having a bottom plate provided with a central flanged projection; a packing member freelyrevolubleabout said flanged-projection; and a metal washer between said packing member and bottom plate.

2. A threaded bottle stopper having a bottom plate provided with a central flanged pro ection; a packing member freely revoluble about said flanged projection; and-a thin metal washer between said packing member and bottom plate adapted) to conform. to the face oi said bottom pl 1e.

3. A threaded bottle stopper having a reduce-(fl cylindrical portion at itsinner end; a packing member freely revoluble about said reduced end; a metal washer between said packing member and. the body portion of the stopper; a flanged stud projecting from and formed integral with said reduced end; and a washer on said reduced end "for retaining said packing member on said reduced end. i

1. A threaded bottle stopper havinga reduced cylindrlcal portion -at-its inner end; a packing member-freely revoluble on said reduced end; metal washer between said packing member and the body portiono'f the stopper; a flanged stud projecting from masses said reduced end; and a metal washer between the flange of said flanged end and said packing member.

5. A threaded bottle stopper formed with an open end having an outwardly extending flange; a bottom plate the edge of which is crimped over said flange and thereby secured thereto; a cylindrical projection on said bottom plate; a packing member freely revoluble about said projection; a metal washer between said plate and packing member; and means for retaining said packing member and washer in said projection.

6. A threaded bottle stopper formed with an open end having an outwardly extending flange; a bottom plate the edge of which is crimped over said flange and thereby se cured thereto; a cylindrical projection on said bottom plate; a packing member freely revoluble about said projection; a thin flexible washer between said plate and packing member; and means for retaining said packin member and washer on said projection.

igned by me at 746 Old South Bldg,

Boston, Mass. this 19th day of January, 1922.

AI B. SHAW. Witnesses:

WALTER E. LOM ARD, NATHAN C. LOMBARD. 

